If I find a video on YouTube that I want to send to a friend, but I really only care about something at the two minute mark, can I send him a link that will start at two minutes into the video for him?

Is there a specific URL or setting when sending a link to a YouTube video that jumps directly to a point in the timeline?

Side note: If you are leaving a comment on the video you can't use the full link (Youtube bans all links in comments), but you can use a simple "mm:ss" format in your comment on Youtube to automatically create a link to that point in the video. I haven't seen this documented anywhere but it comes in handy for quick links. Also it uses Javascript instead of the #t= anchor so you can make multiple time references and click on them really fast to create quick mash-ups or loop the video at a specific point.